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- Newsgroups: comp.sys.mac.hardware
- Path: sparky!uunet!gatech!concert!sas!mozart.unx.sas.com!sch
- From: sch@unx.sas.com (Steve Holzworth)
- Subject: Re: help me upgrade a Plus to 4M
- Sender: news@unx.sas.com (Noter of Newsworthy Events)
- Message-ID: <sch.726342728@gargoyle>
- Date: Wed, 6 Jan 1993 17:52:08 GMT
- References: <1993Jan6.061612.9147@news.media.mit.edu> <C0Foot.ED5@cc.mey.nl>
- Nntp-Posting-Host: gargoyle.unx.sas.com
- Organization: SAS Institute Inc.
- Lines: 30
-
- bobp@cc.mey.nl (Bob Polis) writes:
-
- >In article <1993Jan6.061612.9147@news.media.mit.edu> Fred G Martin,
- >fredm@media.mit.edu writes:
- >>Can anyone tell me if there are special jumper settings a/o trace
- >>cutting needed to upgrade a Mac Plus from 2.5 meg to the full 4 meg of
- >>RAM? Or do I just remove the two 256K SIMMs and plug in the two 1 meg
- >>ones.
-
- >There is nothing to cut or jumper settings to change if you upgrade a
- >Plus from 2.5 to 4 MB. Just replace the 256k SIMMs with 1 MB types.
-
- >(When you upgraded from 1 MB to 2.5 in the past, you already did the
- >necessary cutting: as you will notice, resistor R8 on the logic board
- >will either be cut on one side, or completely removed. This should be the
- >case if any 1 MB SIMMs are used.)
-
- >Bob Polis.
-
- Just for clarity... neither R8 nor R9 should be installed when you
- upgrade your Plus to 4Mb. R8 indicates what type of RAMs you are using,
- and R9 indicates whether you have one or two banks of RAM.
-
-
- --
- Steve Holzworth
- sch@unx.sas.com "Do not attribute to poor spelling
- x6872 That which is actually poor typing..."
- SAS Institute - Open Systems R & D - me
- Cary, N.C.
-